| OFDM系统有效抵抗多普勒效应的方法 |
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| 引用本文： | 钟晓宇,戴伏生,徐晓庆.OFDM系统有效抵抗多普勒效应的方法[J].科学技术与工程,2014,14(14). |
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| 作者姓名： | 钟晓宇 戴伏生 徐晓庆 |
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| 作者单位： | 哈尔滨工业大学(威海) 信息与电气工程学院,哈尔滨工业大学(威海)信息与电气工程学院,哈尔滨工业大学(威海) 信息与电气工程学院 |
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| 摘 要： | 为有效改善在高速运动环境下OFDM系统的多普勒效应问题,提出了一种基于双差分调制的抗多普勒效应方法。方法将OFDM与双差分调制相结合,建立了相应的系统仿真模型。通过仿真验证表明,在高速运动环境下,有效降低了频率偏移和相位偏移的敏感性,同时实现了OFDM系统的有效通信,而且简化了系统接收端的设计复杂度。
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| 关 键 词： | OFDM 双差分调制 频移 相移 |
| 收稿时间： | 2013/11/3 0:00:00 |
| 修稿时间： | 2014/1/29 0:00:00 |
Approach to Reduce Doppler Effect in OFDM System |
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| Zhong Xiao-yu,DAI Fu-sheng and Xu Xiao-qing.Approach to Reduce Doppler Effect in OFDM System[J].Science Technology and Engineering,2014,14(14). |
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| Authors: | Zhong Xiao-yu DAI Fu-sheng and Xu Xiao-qing |
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| Institution: | School of Information Engineering,Weihai Campus,Harbin Institute of Technology,School of Information Engineering,Weihai Campus,Harbin Institute of Technology |
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| Abstract: | In order to effectively reduce doppler effect of OFDM system in high-speed moving environment, the method based on double differential phase modulation is proposed. It is the combination of OFDM and double differential phase modulation. Meanwhile, the corresponding simulation model is established. The simulation results show that under the circumstance of high speed movement, this method could realize high rate communication and effectively reduces the sensitivity of the frequency deviation and phase deviation .Besides,it proves to simplify the design of the system receiver. |
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| Keywords: | OFDM double differential phase modulation frequency deviation phase deviation |
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